SN75ALS170DWR

SN75ALS170, SN75ALS170A TRIPLE DIFFERENTIAL BUS TRANSCEIVER SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995 D D D D D D D D D D D D D D D D DW PACKAGE (TOP VIEW) Three Bidirectional Transceivers Driver Meets or Exceeds ANSI Standard EIA/TIA-422-B and RS-485 and ITU Recommendation V.11 Two Skew Limits Available Designed to Operate Up to 20 Million Data Transfers per Second (FAST-20 SCSI) High-Speed Advanced Low-Power Schottky Circuitry Designed for Multipoint Transmission on Long Bus Lines in Noisy Environments Wide Positive and Negative Input/Output Bus Voltage Ranges Driver Output Capacity . . . ± 60 mA Thermal Shutdown Protection Driver Positive- and Negative-Current Limiting Receiver Input Impedances . . . 12 kΩ Min Receiver Input Sensitivity . . . ± 300 mV Max Receiver Input Hysteresis . . . 60 mV Typ Operate From a Single 5-V Supply Glitch-Free Power-Up and Power-Down Protection Feature Independent Direction Controls for Each Channel 1D 1DIR NC GND NC 2D 2DIR NC 3D 3DIR 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 1B 1A NC NC VCC 2B 2A 3B 3A NC NC – No internal connection J PACKAGE (TOP VIEW) 1D 1DIR GND 2D 2DIR 3D 3DIR 1 14 2 13 3 12 4 11 5 10 6 9 7 8 1B 1A VCC 2B 2A 3B 3A description The SN75ALS170 and SN75ALS170A triple differential bus transceivers are monolithic integrated circuits designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced transmission lines and the driver meets ANSI Standards EIA/TIA-422-B and RS-485 and both the driver and receiver meet ITU Recommendation V.11. The SN75ALS170A is designed for FAST-20 SCSI and can transmit or receive data pulses as short as 30 ns with a maximum skew of 5 ns. The SN75ALS170 and SN75ALS170A operate from a single 5-V power supply. The drivers and receivers have active-high and active-low enables, respectively, which are internally connected together to function as a direction control. The driver differential outputs and the receiver differential inputs are connected internally to form differential input/output (I/O) bus ports that are designed to offer minimum loading to the bus when the driver is disabled or VCC = 0. These ports feature wide positive and negative common-mode voltage ranges making the device suitable for party-line applications. The SN75ALS170 and the SN75ALS170A are characterized for operation from 0°C to 70°C. AVAILABLE OPTIONS SKEW LIMIT 10 ns 5 ns PART NUMBER SN75ALS170DW SN75ALS170J SN75ALS170ADW Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright  1995, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SN75ALS170, SN75ALS170A TRIPLE DIFFERENTIAL BUS TRANSCEIVER SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995 Function Tables EACH DRIVER OUTPUTS INPUT D DIR H H H L L H L H X L Z Z A B EACH RECEIVER DIR OUTPUT R VID ≥ 0.3 V – 0.3 V < VID < 0.3 V L H L ? VID ≤ – 0.3 V X L L H Z Open L H DIFFERENTIAL INPUTS A–B H = high level, L = low level, ? = indeterminate, X = irrelevant, Z = high impedance (off) logic symbol† 1DIR 1D 2 1 logic diagram (positive logic) EN 2DIR 2D 7 6 3D 10 9 20 14 15 1B 1DIR 1D 2A 2B 2DIR 2D 1 12 EN EN 1A 13 1 19 20 1A 1B 7 6 14 15 2A 2B 3A 3B 1 3DIR 3D † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the DW package. 2 2 1 EN EN 3DIR 19 EN POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 10 9 12 13 3A 3B SN75ALS170, SN75ALS170A TRIPLE DIFFERENTIAL BUS TRANSCEIVER SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995 schematics of inputs and outputs EQUIVALENT OF EACH INPUT VCC TYPICAL OF A AND B I/O PORTS TYPICAL OF RECEIVER OUTPUT VCC R(eq) 180 kΩ NOM Connected on A Port Input 85 Ω NOM 3 kΩ NOM A or B 18 kΩ NOM 180 kΩ NOM Connected on B Port Driver Input: R(eq) = 12 kΩ NOM Enable Inputs: R(eq) = 8 kΩ NOM R(eq) = equivalent resistor VCC Output 1.1 kΩ NOM absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Voltage range at any bus terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 7 V to 12 V Enable input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: DW package . . . . . . . . . . . . . . . . . . 260°C Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J package . . . . . . . . . . . . . . . . . . . . . 300°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: All voltage values, except differential I/O bus voltage, are with respect to network ground terminal. DISSIPATION RATING TABLE TA ≤ 25°C POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING DW 1125 mW 9.0 mW/°C 720 mW J 1025 mW 8.2 mW/°C 656 mW PACKAGE POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 SN75ALS170, SN75ALS170A TRIPLE DIFFERENTIAL BUS TRANSCEIVER SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995 recommended operating conditions Supply voltage, VCC MIN TYP MAX UNIT 4.75 5 5.25 V 12 mode) VI or VIC Voltage at any bus terminal (separately or common mode), High-level input voltage, VIH D, DIR Low-level input voltage, VIL D, DIR –7 2 Differential input voltage, VID (see Note 2) High level output current, High-level current IOH Low level output current, Low-level current IOL Driver Receiver Driver V 0.8 V ±12 V – 60 mA – 400 µA 60 Receiver 8 Operating free-air temperature, TA 0 70 NOTE 2: Differential-input/output bus voltage is measured at the noninverting terminal A with respect to the inverting terminal B. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 V mA °C SN75ALS170, SN75ALS170A TRIPLE DIFFERENTIAL BUS TRANSCEIVER SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995 DRIVER SECTION electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) TEST CONDITIONS† PARAMETER VIK VO Input clamp voltage II = – 19 mA IO = 0 Output voltage VOH High-level output High level out ut voltage VCC = 4 4.75 75 V V, VIL = 0 0.8 8V V, VOL Low-level output voltage VCC = 4.75 V, VIL = 0.8 V, | VOD1 | Differential output voltage IO = 0 | VOD2 | g Differential output voltage VOD3 Differential output voltage ∆ | VOD | Change in magnitude of differential output voltage¶ VOC Common mode output voltage Common-mode ∆ | VOC | Change in magnitude of common-mode output voltage¶ IO Output current IIH IIL High-level input current IOS ICC Low-level input current Short circuit output current Short-circuit Supply current MIN TYP‡ 0 VIH = 2 V V, IOH = – 55 mA VIH = 2 V, IOL = 55 mA UNIT – 1.5 V 6 V 2.7 V 1.5 RL = 100 Ω, See Figure 1 1/2 VOD1 or 2§ RL = 54 Ω, See Figure 1 1.5 Vtest = – 7 V to 12 V, See Figure 2 1.5 RL = 540 Ω or 100 Ω Ω, MAX 1.7 V 6 V V 2.5 5 V 5 V ± 0.2 V 3 See Figure 1 –1 ± 0.2 Output disabled,, See Note 3 VO = 12 V VO = –7 V 1 – 0.8 VI = 2.4 V VI = 0.4 V V mA 20 µA – 400 µA VO = – 6 V VO = 0 – 250 VO = VCC VO = 8 V 250 No load V – 150 mA 250 Outputs enabled 69 90 Outputs disabled 57 78 mA † The power-off measurement in ANSI Standard EIA/TIA-422-B applies to disabled outputs only and is not applied to combined inputs and outputs. ‡ All typical values are at VCC = 5 V and TA = 25°C. § The minimum VOD2 with a 100-Ω load is either 1/2 VOD1 or 2 V, whichever is greater. ¶ ∆ | VOD | and ∆ | VOC | are the changes in magnitude of VOD and VOC respectively, that occur when the input is changed from a high level to a low level. NOTE 3: This applies for both power on and off; refer to EIA Standard RS-485 for exact conditions. The EIA/TIA-422-B limit does not apply for a combined driver and receiver terminal. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 SN75ALS170, SN75ALS170A TRIPLE DIFFERENTIAL BUS TRANSCEIVER SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995 switching characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS ALS170 ALS170A td(OD) Differential output delay time ALS170 ALS170A tsk(p) k( ) Pulse skew‡ ALS170 tsk(lim) k(li ) ALS170A Skew limit§ ALS170 ALS170A tt(OD) Differential output transition time Differential-output TYP† MAX 3 8 13 5.5 8 10.5 3 8 13 5.5 8 10.5 1 5 ns 1 5 ns MIN RL = 54 Ω,, TA =25°C, CL = 50 pF,, See Figure 3 RL1 = RL3 = 165 Ω, CL = 60 pF, pF See Figure 4 RL2 = 75 Ω, TA =25°C, =25°C RL = 54 Ω, See Figure 3 CL = 50 pF, RL1 = RL3 = 165 Ω, CL = 60 pF, RL2 = 75 Ω, See Figure 4 RL = 54 Ω,, See Figure 3 CL = 50 pF,, RL1 = RL3 = 165 Ω,, CL = 60 pF, RL2 = 75 Ω,, See Figure 4 RL = 54 Ω, See Figure 3 CL = 50 pF, RL1 = RL3 = 165 Ω, CL = 60 pF, RL2 = 75 Ω, See Figure 4 UNIT ns 10 5 10 ns 5 3 8 13 3 8 13 ns † All typical values are at VCC = 5 V and TA = 25°C. ‡ Pulse skew is defined as the | td(ODH) – t d(ODL) | of each channel. § Skew limit is the maximum difference in propagation delay times between any two channels of one device and between any two devices. This parameter is applicable at one VCC and operating temperature within the recommended operating conditions. SYMBOL EQUIVALENTS 6 DATA SHEET PARAMETER EIA/TIA-422-B RS-485 VO | VOD1 | Voa, Vob VO Voa, Vob VO | VOD2 | Vt (RL = 100 Ω) | VOD3 | Vt (RL = 54 Ω) Vt (Test Termination Measurement 2) Vtest ∆ | VOD | | | Vt | – | Vt | | Vtst | | Vt | – | Vt | | VOC ∆ | VOC | | Vos | | Vos – Vos | | Vos | | Vos – Vos | IOS IO | Isa |, | Isb | | Ixa |, | Ixb | POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Iia, Iib SN75ALS170, SN75ALS170A TRIPLE DIFFERENTIAL BUS TRANSCEIVER SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995 RECEIVER SECTION electrical characteristics over recommended ranges of common-mode input voltage, supply voltage, and operating free-air temperature (unless otherwise noted) PARAMETER VIT + VIT – Positive-going input threshold voltage Vhys VIK Hysteresis voltage (VIT + – VIT –) TEST CONDITIONS Negative-going input threshold voltage VO = 2.7 V, VO = 0.5 V, IO = – 0.4 mA IO = 8 mA TYP† MAX 0.3 – 0.3 ‡ Enable-input clamp voltage II = – 18 mA VID = 300 mV, See Figure 5 IOH = – 400 µA, IOL = 8 mA, High-level output voltage VOL Low-level output voltage VID = – 300 mV, See Figure 5 IOZ High impedance state output current High-impedance-state VO = 2.4 V VO = 0.4 V II Line input current Other input = 0,, See Note 4 IIH IIL High-level enable-input current rI Input resistance IOS Short-circuit output current 2.7 0.45 20 VI = 12 V VI = – 7 V 1 – 0.8 20 – 100 12 Supply current No load VO = 0 Outputs enabled V µA mA µA µA kΩ – 15 Outputs disabled V V – 400 VID = 300 mV, V mV – 1.5 VIH = 2.7 V VIL = 0.4 V Low-level enable-input current UNIT V 60 VOH ICC MIN – 85 69 90 57 78 mA mA † All typical values are at VCC = 5 V and TA = 25°C. ‡ The algebraic convention, in which the less-positive (more-negative) limit is designated minimum, is used in this data sheet for common-mode input voltage and threshold voltage levels only. NOTE 4: This applies for both power on and off; refer to EIA Standard RS-485 for exact conditions. switching characteristics over recommended ranges of supply voltage and operating free-air temperature range PARAMETER TEST CONDITIONS tPLH Propagation delay g y time,, low-to-high-level g output ALS170 tPHL Propagation g delay y time,, high-to-low-level g output ALS170 tsk(p) k( ) Pulse skew§ tsk(lim) Skew limit¶ ALS170A VID = – 1.5 V to 1.5 V, CL = 15 pF, TA = 25°C 25°C, pF See Figure 6 ALS170A ALS170 ALS170A ALS170 MIN TYP† 9 19 11.5 16.5 9 19 11.5 16.5 2 VID = – 1.5 V to 1.5 V,, CL = 15 pF, See Figure 6 ALS170A MAX UNIT ns ns 6 5 10 ns ns 5 † All typical values are at VCC = 5 V and TA = 25°C. § Pulse skew is defined as the | tPLH – t PHL| of each channel. ¶ Skew limit is the maximum difference in propagation delay times between any two channels of one device and between any two devices. This parameter is applicable at one VCC and operating temperature within the recommended operating conditions. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 SN75ALS170, SN75ALS170A TRIPLE DIFFERENTIAL BUS TRANSCEIVER SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995 PARAMETER MEASUREMENT INFORMATION RL 2 VOD2 RL 2 VOC Figure 1. Driver VOD and VOC 375 Ω VOD3 60 Ω Vtest 375 Ω Figure 2. Driver VOD3 3V RL = 54 Ω Generator (see Note A) CL= 50 pF (see Note B) 50 Ω Output 1.5 V Input 1.5 V 0V td(ODH) td(ODL) ≈ 2.5 V 90% 90% Output 3V 50% 10% 50% 10% tt(OD) TEST CIRCUIT ≈ – 2.5 V tt(OD) VOLTAGE WAVEFORMS NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, 50% duty cycle, tr ≤ 6 ns, tf ≤ 6 ns, ZO = 50 Ω. B. CL includes probe and jig capacitance. Figure 3. Driver Test Circuit and Voltage Waveforms 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN75ALS170, SN75ALS170A TRIPLE DIFFERENTIAL BUS TRANSCEIVER SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995 PARAMETER MEASUREMENT INFORMATION S1 5V 0V CL = 60 pF (see Note B) RL1 = 165 Ω RL 2 = 75 Ω Generator (see Note A) Output 50 Ω 3V CL = 60 pF (see Note B) RL3 = 165 Ω 5V 0V S2 TEST CIRCUIT 3V Input 1.5 V 1.5 V Input 0V td(ODL) td(ODH) Output 3V S1 to 5 V S2 to 0 V 0V 10% 90% 90% 1.5 V 0V td(ODL) td(ODH) ≈ 2.9 V 0V 10% ≈ – 2.9 V tt(OD) tt(OD) 0V 10% Output S1 to 0 V S2 to 5 V 1.5 V 90% 90% ≈ 2.3 V 0V 10% ≈ – 2.9 V tt(OD) tt(OD) VOLTAGE WAVEFORMS VOLTAGE WAVEFORMS NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, 50% duty cycle, tr ≤ 6 ns, tf ≤ 6 ns, ZO = 50 Ω. B. CL includes probe and jig capacitance. Figure 4. Driver Test Circuit and Voltage Waveforms With Double-Differential-SCSI Termination for the Load VID VOH + IOL VOL – IOH Figure 5. Receiver VOH and VOL POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 SN75ALS170, SN75ALS170A TRIPLE DIFFERENTIAL BUS TRANSCEIVER SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995 PARAMETER MEASUREMENT INFORMATION 3V Generator (see Note A) Input Output 1.5 V 1.5 V 51 Ω 0V 1.5 V tPLH CL = 15 pF (see Note B) tPHL VOH 0V 1.3 V Output 1.3 V VOL TEST CIRCUIT VOLTAGE WAVEFORMS NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, 50% duty cycle, tr ≤ 6 ns, tf ≤ 6 ns, ZO = 50 Ω. B. CL includes probe and jig capacitance. Figure 6. Receiver Test Circuit and Voltage Waveforms TYPICAL CHARACTERISTICS DRIVER DRIVER HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 5 5 VCC = 5 V TA = 25°C VCC = 5 V TA = 25°C 4.5 VOL – Low-Level Output Voltage – V VOH – High-Level Output Voltage – V 4.5 4 3.5 3 2.5 2 1.5 1 0.5 4 3.5 3 2.5 2 1.5 1 0.5 0 0 0 – 80 – 100 – 20 – 40 – 60 IOH – High-Level Output Current – mA – 120 0 80 100 20 40 60 IOL – Low-Level Output Current – mA Figure 7 10 Figure 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 120 SN75ALS170, SN75ALS170A TRIPLE DIFFERENTIAL BUS TRANSCEIVER SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995 TYPICAL CHARACTERISTICS DRIVER RECEIVER DIFFERENTIAL OUTPUT VOLTAGE vs OUTPUT CURRENT HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT 5 VCC = 5 V TA = 25°C 3.5 VOH – High-Level Output Voltage – V VOD – Differential Output Voltage – V 4 3 2.5 2 1.5 1 VID = 0.3 V TA = 25°C 4 3 VCC = 5.25 V VCC = 5 V 2 VCC = 4.75 V 1 0.5 0 0 0 10 20 30 40 50 60 70 80 IO – Output Current – mA 90 100 0 – 40 – 10 – 20 – 30 IOH – High-Level Output Current – mA Figure 9 Figure 10 RECEIVER RECEIVER HIGH-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 0.6 VCC = 5 V VID = 300 mV IOH = – 440 µA VOL– Low-Level Output Voltage – V VOH – High-Level Output Voltage – V 5 4 – 50 3 2 1 0 – 40 VCC = 5 V TA = 25°C VID = – 300 mV 0.5 0.4 0.3 0.2 0.1 – 20 0 20 40 60 80 TA – Free-Air Temperature – °C 100 120 0 0 15 20 25 5 10 IOL – Low-Level Output Current – mA Figure 11 30 Figure 12 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 11 SN75ALS170, SN75ALS170A TRIPLE DIFFERENTIAL BUS TRANSCEIVER SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995 TYPICAL CHARACTERISTICS RECEIVER RECEIVER OUTPUT VOLTAGE vs ENABLE VOLTAGE LOW-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 5 0.5 VCC = 5 V VID = – 300 mA IOL = 8 mA VID = 0.3 V Load = 8 kΩ to GND TA = 25°C VCC = 5.25 V 4 VO – Output Voltage – V VOL – Low-Level Output Voltage – V 0.6 0.4 0.3 0.2 VCC = 4.75 V 3 VCC = 5 V 2 1 0.1 0 – 40 0 – 20 0 20 40 60 80 100 TA – Free-Air Temperature – °C 0 120 0.5 1 Figure 13 Figure 14 RECEIVER OUTPUT VOLTAGE vs ENABLE VOLTAGE 6 VID = 0.3 V Load = 1 kΩ to VCC TA = 25°C VO – Output Voltage – V 5 VCC = 5.25 V VCC = 4.75 V 4 VCC = 5 V 3 2 1 0 0 0.5 1 1.5 2 VI – Enable Voltage – V 2.5 Figure 15 12 1.5 2 VI – Enable Voltage – V POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 2.5 3 SN75ALS170, SN75ALS170A TRIPLE DIFFERENTIAL BUS TRANSCEIVER SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995 APPLICATION INFORMATION 1/3 SN75ALS170 1/3 SN75ALS170 See Note A Up to 32 Transceivers • • • NOTE A: The line should be terminated at both ends in its characteristic impedance. Stub lengths off the main line should be kept as short as possible. Figure 16. Typical Application Circuit 4 V to 5.25 V 4 V to 5.25 V 330 Ω 330 Ω 150 Ω 150 Ω 330 Ω 330 Ω Up to 16 Transceivers • • • Figure 17. Typical Differential SCSI Application Circuit POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 13 SN75ALS170, SN75ALS170A TRIPLE DIFFERENTIAL BUS TRANSCEIVER SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995 APPLICATION INFORMATION 1 2 4 5 9 10 12 13 VCC 1 BIN/OCT 2 3 6 4 5 15 14 13 12 11 10 9 7 & & 2 1 8 EN 5 4 & 3 EN 7 6 6 2 1 EN 5 4 2 4 6 8 10 12 1 SN74LS04 7 6 EN EN EN 1 8 9 EN 5 4 10 DB(0) 11 –DB(0) 1 8 9 EN 10 ATN 11 –ATN 1 8 9 EN 5 4 EN 10 I/O 11 –I/O 1 8 9 EN VCC 17 2 7 10 18 EN 1 19 BSY 20 –BSY 1 14 SEL 15 –SEL 8 6 1 12 RST 13 –RST 11 To Reset Logic 9 1 SN75ALS171 Figure 18. Typical Differential SCSI Bus Interface Implementation 14 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 REQ –REQ SN75ALS170 G5 5EN1 5EN2 5EN3 EN4 3 1 13 C/D 14 –C/D 1 EN 7 6 MSG –MSG 1 SN75ALS170 EN 2 1 13 ACK 14 –ACK 1 EN EN DB(P) –DB(P) 1 EN 7 6 13 DB(1) 14 –DB(1) 1 SN75ALS170 EN 2 1 DB(2) –DB(2) 1 EN EN To SCSI Bus Controller 10 DB(3) 11 –DB(3) EN 7 6 13 DB(4) 14 –DB(4) 1 SN75ALS170 EN 2 1 DB(5) –DB(5) 1 EN 5 4 SB7 SB6 SB5 SB4 SB3 SB2 SB1 SB0 SBP INIT ACK ATN TARGET MSG C/D I/O REQ BSYOUT BSYIN SELOUT SELIN SBEN ARB 8 9 EN EN 1 3 5 9 11 13 1 SN75ALS170 EN 11 SN74LS00 10 DB(6) 11 –DB(6) EN EN 8 1 EN 11 1 2 4 5 9 10 12 13 13 DB(7) 14 –DB(7) EN 6 SN74LS00 SN74LS138 ID0 ID1 ID2 3 PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) (6) SN75ALS170ADW ACTIVE SOIC DW 20 25 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 75ALS170A SN75ALS170ADWR ACTIVE SOIC DW 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 75ALS170A SN75ALS170DW ACTIVE SOIC DW 20 25 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 75ALS170 SN75ALS170DWR ACTIVE SOIC DW 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 75ALS170 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of